NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Anyone seen one of these before?
From: Bill Morris
Date: 2015 Apr 5, 11:54 -0700
From: Bill Morris
Date: 2015 Apr 5, 11:54 -0700
I'm with Greg and think Stephen is in error. It is not a circular sextant with readings taken from opposite diameters to eliminate centring error. Note that there are two "index mirrors", one above the other and one tall "horizon mirror". The idea was to take simulataneous readings of the angles between three shore objects. See http://sextantbook.com/category/sounding-sextants/ for a later version by Henry Hughes and Son.
Bill Morris
Pukenui
New Zealand.
